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2024-11-04 - 23:15

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #4, slot #6

Rack #0/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #1/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #2/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #3/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #4/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #5/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #6/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #7/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #8/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #9/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #a/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #b/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #c/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #d/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #e/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #f/#0 #1 #2 #3 #4 #5 #6 #7 #8 
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Click on a legend element to toggle display of that core, ctrl-click inverts display, shift-click enables all.

Data to construct the above plot have been generated using the RT test utility cyclictest.

Total number of samples: 50 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes
Compare latency of primary with shadow system
Characteristics of the 50 highest latencies:
System rack4slot6s.osadl.org (updated Mon Nov 04, 2024 12:44:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3115922670,3sleep031157-21fw_packets12:35:170
11929215939,29sleep011952-21ls07:10:000
919621450,3chrt9198-21modprobe09:05:000
900621370,4chrt9008-21latency_hist11:10:000
2109821370,3chrt20743-21/usr/sbin/munin11:55:270
2615721320,2chrt26155-21df_inode10:10:130
599821260,2sleep06001-21wc08:50:290
274642980,3sleep027390-21/usr/sbin/munin10:15:210
11983998859,16cyclictest18591-21df_inode07:35:120
11983998762,15cyclictest5303-21df_inode10:55:120
11983998756,20cyclictest18890-21/usr/sbin/munin09:40:290
11983998661,16cyclictest4096-21latency_hist08:45:020
11983998660,15cyclictest22009-21chrt07:47:490
11983998659,16cyclictest18139-21chrt07:32:490
11983998657,18cyclictest27834-21tr08:10:190
11983998653,19cyclictest13076-21munin-run09:20:010
11983998559,14cyclictest24959-21runrttasks10:05:170
11983998551,20cyclictest23688-21/usr/sbin/munin07:55:240
11983998460,15cyclictest1337-21latency_hist10:40:020
11983998459,15cyclictest16324-21/usr/sbin/munin09:30:280
11983998459,15cyclictest11591-21munin-run11:20:010
11983998458,14cyclictest29161-21chrt08:15:250
11983998457,15cyclictest7725-21munin-run11:05:010
11983998456,17cyclictest31456-21/usr/sbin/munin08:25:250
11983998456,15cyclictest13963-21seq11:28:210
11983998456,15cyclictest11291-21seq09:11:080
11983998455,16cyclictest29288-21users10:20:280
11983998454,20cyclictest25079-21/usr/sbin/munin08:00:140
11983998359,14cyclictest22050-21/usr/sbin/munin12:00:130
11983998359,13cyclictest32160-21chrt10:32:520
11983998359,13cyclictest14896-21find09:25:250
11983998358,14cyclictest14001-21seq09:22:000
11983998357,16cyclictest21804-21seq09:52:410
11983998356,18cyclictest15102-21/usr/sbin/munin07:20:300
11983998355,14cyclictest585-21ntpq08:30:290
11983998354,17cyclictest16404-21mailstats07:25:280
11983998350,20cyclictest19896-21seq11:50:250
11983998259,13cyclictest19711-21/usr/sbin/munin09:45:120
11983998257,15cyclictest27448-21latency_hist08:10:010
11983998256,15cyclictest11790-21df_inode11:20:130
11983998256,14cyclictest25654-21seq12:14:010
11983998256,14cyclictest23212-21seq09:58:440
11983998255,16cyclictest1450-21df10:40:130
11983998253,16cyclictest6968-21ntpq08:55:210
11983998249,22cyclictest25266-21snmpd11:49:290
11983998245,24cyclictest30384-21users12:30:320
11983998155,15cyclictest9313-21memory11:10:170
11983998155,15cyclictest1757-21sort08:35:160
11983998140,28cyclictest3777-21sshd10:49:350
11983998058,13cyclictest18011-21chrt09:38:210
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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